Discharge head



Aug. 23, 1949.

F. B. ALLEN Re. 23,142

DIS CHARGE HEAD Original Filed June 24, 1943 1N VENTOR I BY /F A 5 ilu/v 9 y IQ" May astma aug. z3, 1949* Frank B. Allen, Verona, N. J., assignor to C-O- Two Fire Equipment Company, Newark, N. J.. a corporation of Delaware Original No. 2,425,779, dated August 19, 1947, Se-` rial No. 492,151, June 24, 1943. Application for reissue May 13,1948, Serial No. 26,903

1 This invention'relates to improvements in a 3 Claims. (Cl. 251-134) discharge head for a re extinguishing apparatus and this application is a continuation in part of my application Ser. No. 464,686, led November 5, 1942, in which isclaimed the squeeze grip herein disclosed for a portable nre extinguisher.

Many of the iire extinguishers heretofore marketed include a puncturable disc for normally sealing the contents in the container and means for puncturing this disc and releasing the iire extinguishing duid from the container. There are .certain disadvantages ina construction oi this kindLand it is therefore an object oi' my lnvention to employ an improved sliding valve for releasing the fluid from the container.

Among the objects oi my invention is the provision of a discharge head in which the variousv bores, ports, and seais are so arrangedwthat the body of the discharge head may be produced as by drop forging and the various bores, ports and seats may be provided by a minimum number of drilling operations requiring a minimum niumber of diii'erent positions of the head during these operations.

Other objects oi the invention consist in theV provision of a horizontally slidable valve in which provision is made for supporting such valve to travel in a deinite horizontal line, for readily renewing the valve disc, and for readily reiriov-- ing the valve for the purpose of inspection. cleaning, and replacement.

Other objects oi the invention will appear from the following description taken in connection with the drawings, in which:

Fig. 1 is a vertical central section through thedischarge head. disclosing the various bores and showing the valve in longitudinal section; and Fig. 2 is a, top view disclosing in section the discharge port and a rotatable connection between the discharge head and a discharge horn.

My improved discharge head l is of general cruciionn as disclosed in Fig. 1 and is provided with a lower cylindrical extension 5 which' is threaded exterlorly for threaded engagement with the usual container bottle 8.

'Ihe discharge head is provided with a vertical through-bore B which at its lower end in the extension 5 is threaded for threaded lengagement therewith of a syphon tube 9.

The upper end of the bore 8 is enlarged to form a. shoulder on which is seated a sealing washer and a frangible sealing disc I and the wall of the bore is threaded to receive a threaded retainlng pliug II which retains the i'rangible'sealing g disc I on the shoulder. The plug ills of known construction and is provided with various radial ports as disclosedior anti-recoil purposes.v

The discharge head is also provided with ay horizontally extending through-bore generally indicated at I2 .which intersects the bore B. This bore at the point of intersection constitutes a valve chamber I3 for a valve generally indicated at Il. One end of this bore is enlarged to provide a shoulder I onwhich is seated a packing I8 held in position by a plug I1 in threaded engagement with the walls of said bore. `One end of the plug is provided with wrench engaging faces I8 andthe other end oi the plug is provided with an extension I9 entering the valve chamber I3. This extension and the main body of the plug Vare provided withy a bore which has a reduced extension 2| i'n the body of the plug terminating in the head oi the plug. This provides a shoulder 22 on which is seated a valve spring 23 and the reduced section of the bore provides a space in which operates an extension or manipulative means 25 carried vby the valve Il. The otherr end of the. valve chamber I3 is pro vided with a valve seat. 3|! formed by reducing this section of the bore as indicated at 3l and the bore Is further reduced as indicated at 32 to provide a sliding nt with the valve stem 33. The bore thenis enlarged as indicated at`35 'toreceive a sealing washer 36 through which the valve stem passes and to threadedlyreceive a plug 31 which holds the washer in position. The plug is valve stem 33 operates.

As disclosed in Fig. 2,*extending'laterally from the bore 3| is a discharge port I0 to discharge re extinguishing fluid into a horn or` the like II which maybe rotatably connected tothe discharge head by a well known" construction indicated in this iigure and which comprises a removable cap 42 permitting the removal of the horn for the purpose of recharging the container through the port 4I).

The valve generauy indicated at u mprises provided with a longitudinal bore in which the e a valve carrier or cup I5 provided with an ex- 'e tension 4G encircled by the valve spring 23 and this extension 46 may be provided with a vthin walled reduced extension 41 which may be provided with a seat to receive the head 48 on the manipulative extension 25. The head of the manipulative extension 25 is preferably secured within'the s eat -bya spinning operation as indi.- cated in Fig. 1.

It is preferred to reduce the valve stem 3sat provide more clearance for the discharging and -rechargingiiuid' 'l'hevalvestemisdiselosedaspreferablymade removable from the valve carrier or cup for the purpose of facilitating replacement of the valve disc and it is preferably threadedly connected to the cup to provide for an adjustment to compress thevalvediscandtoseatthedisctightlyinthe cup and about the valve stem.

As disclosed and claimed in said application referred to, I use as operating means a handle construction comprising a lower pivoted main handle 50 which may be moved against the con-- tainer so as to be out of the way and which will be raised into the position indicated by dotted linesfwhen it'is seized to lift and carry the con- Iclaim: l, 1. A discharge head for a high pressure fluid container, provided with a straight vertically extending through-bore adapted to receive a syphon tube at its lower end and shouldered and threaded at its upper end and adapted to receive a'safety disc plug, and provided with a straight horizontally extending through-bore intersecting said vertically extending bore and including a valve chamber at said point o! intersection, ak

valve in said valve chamber provided with a vatve stem on one side, a valve spring seated at one end against the other side or said valve. said horizon tal bore including a reduced portion providing at one end oi said valve chamber a valve seat, a horizontally and laterally extending port communicating with said reduced portion. and said horizontal bore having a further reduced portion providing a support and guide for the valve stem and an enlarged end portion adjacent thereto, a retaining plug in said enlarged portion, said plug being providedwith a longitudinal through-bore adapted to receive the valve stem, the valve stem being of a length to extend beyond the outer end of said plug, and said horizontal bore being provided at its other end with a shoulder and an enlarged portion and a plug in' said latter enlarged portion constituting a seat for the other end ot said spring.

guide for the valve stem and an enlarged end l 1 portion adjacent thereto, a retaining plug in said enlarged portion, said plug being provided with a longitudinal Athrough-bore adapted to receive said valve stem, the stem oi the valve extending beyond the outer end of said plug, and said horizontal bore being provided at its other end with a shoulder and enlarged portion and a plug in said enlarged portion provided with a reduced end extending into said valve chamber, the inner end of said plus being provided with a reces of diii'erent diameters providing a shoulder constituting a seat for the other end of said spring,

the portion of said recess of smaller diameter ex-f tending adjacent to the outer end of the plug andv adjacent to the outer end oi said last mentioned enlarged, portion of said horizontal bore. said manipulative extensiony operating in said smaller diameter portion of said recess in said last mentioned plug and extending when the valve is rseated to a point adjacent the outer end oi' said f last mentioned enlarged portion of said horizonsaid vertically extending bore and including a lvalve chamber at said point of intersection, a

valve in said valve chamber provided with a valve stemon one side, a valve spring seated at one end against the other side of said valve. said horizontal bore including a reduced portion providing at 2. A discharge head .for a high pressure fluid container, providedwith a straight vertically extending through-bore adapted to receive a sy- 'phon tube at its lower end and shouldered and threaded at its upper end and adapted to receive a safety disc-and plug, and provided with a straight horizontal through-bore intersecting said vertically extending -bore and including a valve chamber at said point of intersection. a

iv'alvciitl said chamber provided with a valve stem on one side and a manipulative element on its 'other side, a valve spring surroundingY said manipulative element and' seated at one end on said valve, said horizontal bore having a reduced -portion providing at one end of said valve chamv a further reduced portion providing a supporting one end of said valve chamber a valve seat, a horizontally and laterally extending port communicating with said reduced portion, and said horizontal bore having a further reduced portion providing a support and guide for the valve stem and an enlarged` end portion adjacent thereto, a retaining plug in said enlarged portion, said plug being provided with a longitudinal through-bore adapted to receive the valve stem, the valve stem being oi.' a length to extend beyond the outer end of said plug, and said horizontal bore being provided at its other end with a shoulder and an enlarged portion and a plug in saidenlarged portion constituting a seat forthe other end of said spring, and said valve stem having a smaller diameter in said rst mentioned reduced portion of said yhorizontal bore providing an enlarged passageway for discharging and recharging iluid passing the valve seat when the valve is unseated.

FRANK B. ALLEN.

REFERENCES CITED The vfollowing references are of record in the .ile of this patent:

UNITED STATES PATENTS Number Name Date 1,311,815 Harris July 29, 1919 1,761,821 Fagan June 3, 1930 1,895,472 McCllIiev Jan. 31, 1933 1,953,358 Mantz Apr. 3, 1934 2,205,241 Clark June 18, 1940 FoRmGN PATENTS Number Country y Date 663,980 France 1929 

